X0306 4/A 2016-02-18 2016-02-18 false 0001489393 LyondellBasell Industries N.V. LYB 0001649570 Guilfoyle James D 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, Global I&D, Supply Chain Class A ordinary shares 2016-02-18 2016-02-18 4 F false 521.00 77.93 D 5465.00 D Represents shares required to satisfy tax withholding obligations in connection with the vesting of 1,740 shares of qualified performance-based stock granted to the Reporting Person on February 12, 2013. Includes 4,246 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,004 granted November 28, 2011 vest on November 28, 2016; 584 granted on February 28, 2012 vest on February 28, 2017; 446 granted on February 12, 2013 vest on February 12, 2018; 331 granted on February 20, 2014 vest on February 20, 2017; 328 granted on February 17, 2015 vest on February 17, 2018; 92 granted on June 1, 2015 vest on June 1, 2018. The 1,461 RSUs reported on this Form 4 vest on February 16, 2019. The total amount of securities beneficially owned has been updated to correct an administrative error related to a tax withholding in the filing submitted on February 18, 2016. 525 shares were reported as the amount withheld for taxes on February 18, 2016, rather than 521 as they should have been correctly reported. As a result, the total amount of securities beneficially owned was incorrectly reported on subsequent Form 4s filed for the reporting person. The footnote now reflects the accurate beneficial ownership of shares. This is intended to amend all prior filings since this report was filed. /s/ Lara A. Mason, Attorney-in-Fact 2018-02-14